Wegman Report’s ’abysmal scholarship’ revealed

By Gareth Renowden 30/09/2010


A detailed investigation into the genesis of the 2006 Wegman Report — much beloved of climate sceptics because it was critical of the “hockey stick” paleoclimate reconstructions of Michael Mann (et al) — has shown it to be deeply flawed, stuffed with poorly-executed plagiarism, and very far from the “independent, impartial, expert” effort it was presented as to Congress. The new 250 page study, Strange scholarship in the Wegman Report (exec summary, full report) by John Mashey (with considerable assistance from Canadian blogger Deep Climate) finds that:

  • a third of the Wegman Report was plagiarised from other sources, without attribution
  • half of the references in the bibliography are not cited in the main text, and one reference is to “a fringe technology publication by a writer of pseudoscience”
  • a graph of central England temperatures from the first IPCC report was distorted and misrepresented
  • the supposedly impartial Wegman team were fed papers and references by a member of Republican Congressman Joe Barton’s staff
  • Wegman’s social network analysis of the authorship of “hockey team” papers was poor, and did not support the claims made of problems with peer-review in the field

Mashey points out that Wegman “claimed two missions: to evaluate statistical issues of the “hockey stick” temperature graph, and to assess potential peer review issues in climate science”. Instead, its real purpose was to:

#1 claim the hockey stick broken and #2 discredit climate science as a whole. All this was a façade for a PR campaign well-honed by Washington, DC “thinktanks” and allies, under way for years.

If you’ve ever attempted to follow the “hockey stick” controversy, Mashey’s study is an incredibly thorough and detailed dissection of the extent to which the whole effort has been underpinned by the usual suspects — the network of well-funded think tanks and their political allies. His conclusion is telling:

I think this was a well-organized effort, involving many people, to mislead the American public and Congress. The former happens often, but the latter can be a felony, as is conspiracy to do it, and not telling about it. […] The Wegman Report misleads by avoidance of good scholarship, good science and even good statistics.

More on the Wegman scandal at Deep Climate, Not Spaghetti, and Scott Mandia’s Global Warming: Man or Myth?